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Question

Identify the respiratory organs in the given organisms.

A
Spiracles
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B
Gills
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C
Lungs
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D
Skin
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Solution

Cockroach is an insect, that has openings called spiracles on its body surface for taking in oxygen-rich air.
Fish have gills that are well supplied with blood vessels for exchange of gases.
Earthworm has moist and slimy skin that helps to absorb the oxygen for respiration.
Human beings have lungs with numerous air sacs where exchange of gases takes place.

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